b) Propstore: Hand-drawn
in pencil on tracing paper by Academy Award®-nominated Art Director
Alan Tomkins (uncredited on the film), the illustration shows scaled
plan and elevation diagrams of the stowage bays, with detailed images of
the wall designs for the ship's doorways. A data sheet in the bottom
right dates the piece to 14 June 1978. The artwork displays some wear
from use on production, including creases and minor tears, with a tape
repair to the top-left on the rear. Dimensions: 75 cm x 123 cm (29 ½" x
48 ½")
(source: http://www.propstore.com/product/alien/14-live-auction-2016-hand-drawn-nostromo-hangar-pencil-illustration/)